Class: 7

Date: march 5 / 10

Item: osmosis

Osmosis

Is when nutrients or ions enter and leave; but the cell don’t spend energy.

The osmosis occurs for the concentration has been equals inside and outside of the cell.

The osmosis occurs in presence to a cell membrane.

Class: 8

Date: 09/03/10

Item: diffusion process and active transport

Diffusion

Is the spontaneous movement of particles from an area of high concentration to and are of low concentration.

Active transport:

Is when the cell spends energy, to transport molecules across the membrane, there are two types of passive transport endocytosis and exocytosis. Is when the cell enters as water and nutrient substances.

Endo= adentro

There are two types of endocytosis

1. Phagocytosis 2. Pinocytosis}

Phagocytosis: is the entry of nutrients through the membrane with energy spent.

Pinocytosis: the entry water into the cell, the membrane invaginates and forms a vacuole that waters enter in to the cell.

Exocytosis: the output of waste outside the cell in this process the cell spends energy.

Homework:

Homework :

Membrane Transport: The cell biology of membrane transport is called the set of mechanisms that regulate the passage of solutes, such as ions and small molecules across cell membranes, ie lipid bilayers that have proteins embedded in them.

Mind is a selective permeable barrier, since it prevents the free exchange of materials from one place to another, but at the same time provide a means for communicating a space with another;


Allows the passage or transport of solutes from one side to another cell, it regulates the exchange of substances between the interior and exterior of the cell down a concentration gradient;

Class: 3

class:2

the cell is what form the DNA that is how the generations, all living things have cells we are made of cells

Class: 1

Date: February 09/10 (Tuesday)

Item: curriculum

Biology 7°

1. Achievement:

· Recognize that the cell is the smallest unity of structure and function and it formed the life.

2. Goal:

· Differences functions and cell organelles.

· Identifies plant cell and animal cell.

· Recognize and difference tissues.

· Explain mitosis and cell division.

· Process and cell be organized to from tissues, organs, apparatus, systems, and living things.

· Identified animal tissues and vegetal tissues

Topics

1. The cell

· Structure

· Function

· Cell

2. Animal cell

Vegetal cell

3. Cell division

· Mitosis

· Meiosis

4. Tissues

· Vegetal tissues

· Animal tissues

5. Levels of the cell organization

Homework

The consult and do a definition of cell. With mine own words

1. explain these sentences by giving examples.

* a specific are and the living and nonliving things found there form an ecosystem.
* there is a connection between all the living things occur in different areas.
* changes to an area affect the animals and plants that live there.

2.what effects can each of these human actions have on the environment?

*putting polluted water into the ocean
* creating protected natural areas
* building a new road
* out lawing the huntin of specific animals

3. how can we measure temperature by using a thermometer?what units is temperaturemeasured in?

basic content.

4.complete these sentences

* these elements influence the climate in an area: __________,_____________,_________and____________.

*temperature varies with_________and________
we measure temperature with a _______.
- there is more precipitation in _________,__________and__________.
- we use an anemometer to measure wind__________.we use a
_________to determinethe wind's direction.

5. copy and complete the table.



6. what are the main differences between these biomes?

* desert and tropical rain forest.
*decidous forest and chaparral.

7. match the numbers with the words. color the tropical zone red, the polar zones blue and the temperature zones orange.

equator artic circle
tropic of cancer tropical zone
tropic of capricorn temperate zones

antartic circle polar zones


8. copy and complete the diagram

The environment

All living things and the characteristics of the area where they live (temperature, humidity, soil etc…) from the environment.
A plant or animal can only survive in certain environment. Every living thing needs to live in a specific type of place. However people have adapted to beable to live anywhere.
Our environment is the whole planet
Environmental problems:
Environmental problems cause damage to the environment. They harm living things and their habitat.
The main environmental problems are:
1. Pollution: the accumulation of harmful substances on the ground, in the air and in the water causes pollution. These substances harm living things.

2. Deforestation: is the disappearance of forests. Cutting down too many trees, pollution and fires all cause deforestation.


3. Desertification: is the transformation of some landscapes into desert areas. The soil becomes very dry and poor. Few living things can survive in these areas.

4. Habitat loss: occurs when natural areas are destroyed to make room for housing or industry. Habitat loss can also occur because of deforestation or desertification.



5. Excessive development, hunting, fires and other actions can use the extinction of living things.

Solutions
1. Reduce pollution.
2. Avoid cutting down wild trees for wood.
3. Outlaw the hunting of animals.
4. Protect specific natural areas.

Class work
Explain these sentences by giving examples:
• A specific area ecosystem.
• There is a connection between all the living things in an ecosystem.
• Different living things occur in different areas.
• Changes to an area affect the animals and plants that live there.
What effects can each of these human actions have on the environment?
• and the living and nonliving things found there from and
• Putting polluted water into the ocean.
• Creating protected natural areas.
• Building a new road.
• Outlawing the hunting of specific animals

Development

Because in the ecosystem if there are living beings and nonliving creatures. for example: plants, animals, stones and more.

I think because there is nothing if not living in an ecosystem.

If clear affects animals and living things because their habitat is no longer the same.

if for the living and the things we have not even found in many different areas.

if animals are used unclear why living in a very different climate

if we place in the sea water contaminated animals may die because the previous water was not polluted.

Biomes

Is a group of ecosystems that have similar light, temperature, humidity and living things?
For example: the rain forest in the world.
Specific living things occur in each type of biome. Each biome is in a specific climatic zone.
Biome of warm zones:
There are three types of biomes in warm zones:
The desert: is a biome where there is a little water. The temperatures are very high during the day and very low at night. Cacti, coyotes and camels live in the desert biome.
Tropical rain forest: it rains a lot. It is very humid and warm, are also very dense, they have a lot of trees, like rubber trees, and animals like the toucan.
The savanna: is a biome where a very dry season is followed by rainy season every year.
The most common plants are types of grass. The trees grass for apart from each other.

Giraffes and lions live in the African savanna.

Temperate zone biomes: this biomes are in the temperate zones.
Chaparral: evergreen plants and brushes are found here. These plants can survive hot, dry summers. Typical plants include thyme and oak. Rabbits and boars live here.
Temperate forest: pine trees and trees that lose their leaves in autumn are typical of these forest. Spruce and elm trees, deer and bears live here.
Prairies and steppes: this biome is a large plain covered with grass. There are few trees the prairie dog and the bison live in this biome.
Biomes of cold zones: the tundra and boreal forest are in cold zones.
The tundra: Has very low temperatures. Lichens and small plants like moss are characteristic plants. Reindeer and the arctic fox live here.
Boreal forest: are cold zone forest characteristic plants include lichens, pine trees and fir trees. The ground of boreal forests is covered with ice and snow for many months of the year. The beaver and the Canada lynx live in this biome. Boreal forests are also called taiga.

Solar energy

The sun, a source of energy.

Earth does not emit its own light. It comes from the sun. The sun is constantly producing energy. This energy travels through space and reaches earth as heat and light.

Heat: it travels to earth by means o radiation. The sun’s rays reach different places on earth at different angles, that’s why there are hotter and colder areas.

Perpendicular rays= hotter diagonally rays= colder

Light: is a form of energy. The light that comes from the sun looks white, but is made up of many colors.

Light propagates in straight line and all directions, light travels at great speed.

Some objects allow light to pass through them, transparent.

Some objects do not let light pass through them opaque.

Some objects only let part of the light pass through them translucent.

Reflection: it’s when light changes direction when it hits and objects.

Refraction: it’s when light changes direction when it passes from one substance to another.

Earth is a magnet

· Magnets: are objects that attract iron and steel. This force of attraction is called magnetism.

· Electromagnets: are artificial magnets. They need an electric current to work.

Earth’s magnetic field

Earth is a giant magnet. Like all magnets, it has two magnetic poles:

· Earth’s magnetic south pole is in northern Canada

· Earth’s magnetic north pole is near the Antarctic coast.